Bluetooth adapter Receiver (audio receiver) Jack-3.5, RCA, USB Flash. Bluetooth 5.2. BLS-B21 Review

Allows you to make wireless (Bluetooth) any wired stereo acoustics (speakers, headphones). This is suitable for transmitting sound from a smartphone via Bluetooth to wired speakers. Product Model: BLS-B21 Device Support: Support two mobile phones. Bluetooth version: 5.2 Output interface: 3.5mm stereo RCA left and right channels. Function introduction: U-disk, hands-free call, NFC connection Bluetooth protocol: AVRCP, A2DP Frequency range: 2400-2483.5 MHz Frequency response: 20Hz-20kHz Output power: 28mW RL=16ohm Signal-to-noise ratio: "90 dB" Total Harmonic Distortion: "0.1%" Support SBC, AAC Direct transmission distance: 10 meters Support Micro USB interface 5V power supply Product size 78*50*18 (mm) Package weight: 108 g